479489557 has 4 divisors (see below), whose sum is σ = 479544300. Its totient is φ = 479434816.

The previous prime is 479489513. The next prime is 479489597. The reversal of 479489557 is 755984974.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 242144721 + 237344836 = 15561^2 + 15406^2 .

It is a 3-Lehmer number, since φ(479489557) divides (479489557-1)³.

It is a cyclic number.

It is not a de Polignac number, because 479489557 - 2⁷ = 479489429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479489597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10948 + ... + 32845.

It is an arithmetic number, because the mean of its divisors is an integer number (119886075).

It is a Poulet number, since it divides 2^479489556-1.

Almost surely, 2^479489557 is an apocalyptic number.

479489557 is the 10949-th decagonal number.

It is an amenable number.

479489557 is a deficient number, since it is larger than the sum of its proper divisors (54743).

479489557 is a wasteful number, since it uses less digits than its factorization.

479489557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54742.

The product of its digits is 12700800, while the sum is 58.

The square root of 479489557 is about 21897.2499871559. The cubic root of 479489557 is about 782.6958857957.

The spelling of 479489557 in words is "four hundred seventy-nine million, four hundred eighty-nine thousand, five hundred fifty-seven".